<!DOCTYPE html>
<HTML>
<HEAD><meta name="viewport" content="width=device-width, initial-scale=1">
<Title>ChartViewer.setZoomDirection</Title>
<link type='text/css' rel='Stylesheet' href="maxchartapi.css" />
</HEAD>
<body bgcolor="#FFFFFF" text="#000000" topmargin="0" leftmargin="0" rightmargin="0" marginwidth="0" marginheight="0">

<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1"><a href="ChartViewer.htm">ChartViewer</a>.<wbr>setZoomDirection</p>
<hr class="separator">
<p class="heading2a">Usage</p>
<div class="content">
public void setZoomDirection(int direction)
</div>
<p class="heading2">Description</p>
<div class="content">
Sets the zoom direction for mouse zoom in/out actions.<br><br>
In zoom operations for charts, it is common to restrict zooming to one direction only. For example, in a chart plotting temperature against time, zooming in from a yearly chart to a daily chart may mean the time axis (x-axis) is zoomed in by 36500%, while the temperature axis (y-axis) may be auto-scaled and not zoomed in at all. The user may be surprise if you also zoom in the y-axis by 36500%, in which case the chart may become hardly readable.<br><br>
This method allows you to determine the zoom direction for mouse zoom actions (see <a href="ChartViewer.setMouseUsage.htm">ChartViewer.setMouseUsage</a>), specified using the following predefined constants:<br><br>
<div style="width:100%;box-sizing:border-box;"><table width="100%" border="1" cellpadding="5" cellspacing="0"> <tr><th width="19%">Constant<th width="19%%">Value<th>Description
<tr><td><a href="Chart.DirectionHorizontal.htm">DirectionHorizontal</a><td>0<td>Zoom actions apply to horizontal direction only.
<tr><td><a href="Chart.DirectionVertical.htm">DirectionVertical</a><td>1<td>Zoom actions apply to vertical direction only.
<tr><td><a href="Chart.DirectionHorizontalVertical.htm">DirectionHorizontalVertical</a><td>2<td>Zoom actions apply to both horizontal and vertical directions.
</table></div>
</div>
<p class="heading2">Arguments</p>
<div class="content">
<div style="width:100%;box-sizing:border-box;">
<table border="1" cellpadding="5" cellspacing="0" width="100%"> 
<tr>
<th width="19%">Argument</th><th width="19%">Default</th><th>Description</th>
</tr>
<tr>
<td>direction</td><td>(Mandatory)</td><td>The zoom direction for mouse zoom actions.</td>
</tr>
</table>
</div>
</div>
<p class="heading2">Return Value</p>
<div class="content">
None
</div>
<br><hr class="separator">
<div class="copyright">&copy; 2022 Advanced Software Engineering Limited. All rights reserved.</div>
</body>
</HTML>
